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Dalmatella

Generic name: DALMATELLA Ercegović, 1929. Acta Bot. Inst. Bot. Univ. Zagreb. 4: 39.
Synonyms:
Diagnosis:
Type species: Dalmatella buaensis Ercegović 1929
Descriptions:
Komárek & Anagnostidis (1998): Thallus at first epilithic, more or less thick, gelatinous, forming amorphous mass with irregularly disposed cells (sometiems ensheathed), in groups or forming irregular rows of cells or pseudofilaments; later endolithic. Endolithic pseudofilaments grow parallely to one another and perpendicularly into the calcareous substrate; they are thick, enveloped by wide, distinct, clearly delimited, colourless and more or less homogeneous gelatinous envelopes. Endolithic pseudofilaments are composed of one or more rows of cells and are sometimes pseudodichotomously divaricate. Cells more or less spherical or irregular-rounaed, in epilithic parts of thallus smaller, subspherical, oval or polygonal, rarely elongate, but more spherical than in endolithic pseudofilaments, where they are usually ellipsoidal or cylindrical, clearly distant from one another. End cells sometimes wider than cells in pseudofilaments. Gelatinous envelopes in epilithic parts are usually more delimited, coloured and lamellate, than in endolithic parts, where they are colourless, more or less homogeneous. Cells pale blue-green.

Komárek (1992): Unicellular - colonial; thallus develops firstly epilithic, more or less amorphous with irregularly disposed cells, later endolithic, composed from two types of pseudofilaments in the epilithic, thick, gelatinous mass are irregular rows of cells, the endolithic pseudofilaments grow parallely into the calcareous substrate; they are thick, enveloped by wide, distinct, colourless and more or less homogeneous gelatinous envelope. Pseudofilaments are composed from one or more rows of cells and sometimes pseudodichotomously branched. Cells more or less irregular, in epilithic parts of thallus smaller, oval or polygonal, more spherical than in endolithic pseudofilaments, where they are usually more elongated, ellipsoidal or cylindrical, clearly distant one from another. End cells probably more widened, gelatinous envelopes in epilithic parts are usually more limited, coloured and lamellated. Cells pale blue-green.

Geitler (1932): Lager zum Teil epilithisch, zum Teil endolithisch, weit ausgebreitet. Aufbau aus zweierlei Fäden: epilithische Fäden auf der Oberfläche von Steinen unregelmäßig ausgebreitet, dick, endolithische Fäden senkrecht eindringend, mehr oder weniger parallel, dünn. Wachstum durch interkalare Teilungen und durch Teilung der Endzellen nach drei Raumrichtungen; Fäden in den älteren Teilen 2- oder mehrreihig, dichotom verzweigt. Zellen der epilithischen Fäden meist kugeng oder ellipsoidisch, seltener länglich, oft polygonal abgeplattet, meist Ghroococcalen-axtiig regellos verteilt und nicht deutlich fädig angeordnet; Zellen der endo-lithisehen Fäden mehr oder weniger länglich und zylindrisch, oft voneinander entfernt, oft in regelmäßigen Reihen; Endzelle der endolithischen Fäden apikal etwas verdickt. Membranen der epilithischen Fäden fest, gefärbt, oft geschichtet; Membranen der endolithischen Fäden farblos. Wahrscheinlich Gronidienbildung in den epilithischen Fäden, Nannocyten. Keine Endosporen-bildung.
Genotype differences, molecular
data:
Reproduction strategies, life cycles, cell division:
Komárek & Anagnostidis (1998): Cell division irregular in three or more planes, in endolithic pseudofilaments mostly transverse, but sometimes lengthwise to the axis of pseudofilaments. In pseudofilaments division occurs in both intercalary and apical cells. Sometimes there is division into baeocytes m epilithic pseudofilaments by successive cell division. Reproduction by solitary cells, baeocytes, or by small gelatinous clusters of cells.
Komárek (1992):Cell division irregular in different planes, in endolithic pseudofilaments mostly crosswise to the axis of pseudofilaments. Sometimes production of nano- cytes by successive cell division. Reproduction by solitary cells (nanocytes) or by small gelatinous clusters with cells
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Chroococcales, Hyellaceae, Solentioideae
Notes to taxonomy, misinterpretations:
Komárek & Anagnostidis (1998): The existence of the genus was recently confirmed by Pantazidou (1991), but all the species need revision.

Komárek (1992): Five little distinguishable species.
Ecology, ecophysiology, ecological significance:
Komárek (1992):All cells described and known only from rocky limestone shores of Mediterranean Sea (Yugoslavia - Dalmatia, S. Greece).
Little known genus.
Physiology and biochemistry:
Distribution, endemism, problematic
citations:
Reference strain:
Infrageneric scheme, species
concept:
List of species:
Dalmatella anomala Ercegović 1932
Dalmatella buaensis Ercegović 1929
Dalmatella littoralis Ercegović 1932
Dalmatella polyformis Ercegović 1932
Dalmatella violacea Ercegović 1932

Unclear taxa:
Dalmatella sp. sensu Pantazidou 1991

Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Ercegović 1929, Ercegović 1932, Geitler 1932, Fremy 1934, Geitler 1942,  Kosinskaja 1948, LeCampion-Alsumard 1979 (diss.), Pantazidou 1991 (diss.), Komárek 1992, Komárek & Anagnostidis 1998
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: